System hibernation and Internet connection

During the day my MX system often slides into hibernation (this might happen 5 or 6 times) and waits to be reactivated. The problem is, is that my internet connection gets really slow. At the end of the day I might have a download speed of 15 mb (should be 250) and pinging takes seconds. Does anyone know the reason behind this? Can I get the connection running smoothly again without rebooting?

Am I understanding this right:

If you reboot, your internet connection is at full speed again?
Have you tried what happens if you restart the network manager?

sudo restart network-manager

Yes…if I reboot then everything is perfect again and I have my full 205mb…I will try your suggestion!

Danke Mina :slight_smile: